Amazon diversification and cross-Andean dispersal of the widespread Neotropical tree species Jacaranda copaia (Bignoniaceae)
Aim: The phylogeographical history of Neotropical species can be difficult to reconstruct because of superimposed Neogene and Quaternary histories, and because of taxonomic uncertainty. We analysed range-wide genetic diversity in a widespread pioneer tree species, Jacaranda copaia (Aubl.) D. Don, to...
| Autor principal: | Scotti-Saintagne, Caroline |
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| Outros Autores: | Dick, Christopher W., Caron, Henri, Vendramin, Giuseppe Giovanni, Troispoux, Valérie, Sire, Pierre, Casalis, Maxime, Buonamici, Anna, Valencia, Renato L., Lemes, Maristerra R., Gribel, Rogério, Scotti, Ivan |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Journal of Biogeography
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/17894 |
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oai:repositorio:1-17894 |
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oai:repositorio:1-17894 Amazon diversification and cross-Andean dispersal of the widespread Neotropical tree species Jacaranda copaia (Bignoniaceae) Scotti-Saintagne, Caroline Dick, Christopher W. Caron, Henri Vendramin, Giuseppe Giovanni Troispoux, Valérie Sire, Pierre Casalis, Maxime Buonamici, Anna Valencia, Renato L. Lemes, Maristerra R. Gribel, Rogério Scotti, Ivan Biogeography Chloroplast Genetic Analysis Genetic Differentiation Geographical Region Molecular Analysis Mutation Neogene Neotropical Region Phylogeography Pleistocene Pliocene Population Distribution Reconstruction Shrub Species Diversity Taxonomy Tropical Forest Vicariance Amazon Basin Guyana Shield Aim: The phylogeographical history of Neotropical species can be difficult to reconstruct because of superimposed Neogene and Quaternary histories, and because of taxonomic uncertainty. We analysed range-wide genetic diversity in a widespread pioneer tree species, Jacaranda copaia (Aubl.) D. Don, to characterize phylogeographical structure, date the evolutionary relationships among lineages, and evaluate the role of dispersal and vicariance in establishing the present geographical range. Location: Guiana Shield; central, southern and western Amazon Basin; Chocó region; Central America. Methods: We analysed nine nuclear simple sequence repeat loci (nuSSR), eight chloroplast SSRs (cpSSR), and two cpDNA intergenic sequences in 341 adult trees. Genetic differentiation at nuSSRs was inferred using Bayesian clustering. Dating of chloroplast lineage divergence was obtained using a range of published mutation rates and Bayesian coalescence analyses. Population divergence dating was performed using an isolation-with-migration model for eight loci (one cp sequence and seven nuSSRs). Results: Nuclear SSR variation identified three geographically overlapping clusters (nu-1, nu-2, nu-3). Twelve cpDNA haplotypes were clustered into two haplogroups (cp-1, cp-2) with the central Amazon harbouring the highest diversity. Molecular dating analysis suggests that cpDNA haplotype diversification started around the end of the Pliocene (2.61 Ma on average), whereas population divergence was more recent and occurred during the mid-Quaternary (point estimates between 357 and 436 ka). Main conclusions: The genetic variation of J. copaia in the Neotropics was shaped mainly by Pleistocene events. Chloroplast diversity did not display the expected cis/trans Andean disjunction, indicating recent dispersal. Nuclear variation revealed that separate regions share a recent history, with a centre of diversity in the central Amazon Basin. The geographical pattern of diversity is congruent with the distribution of the two subspecies, J. copaia copaia and J. copaia spectabilis, and evidence of nuSSR admixture between the two taxa supports their classification as subspecies. © 2012 Blackwell Publishing Ltd. 2020-06-15T21:49:55Z 2020-06-15T21:49:55Z 2013 Artigo https://repositorio.inpa.gov.br/handle/1/17894 10.1111/j.1365-2699.2012.02797.x en Volume 40, Número 4, Pags. 707-719 Restrito Journal of Biogeography |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Biogeography Chloroplast Genetic Analysis Genetic Differentiation Geographical Region Molecular Analysis Mutation Neogene Neotropical Region Phylogeography Pleistocene Pliocene Population Distribution Reconstruction Shrub Species Diversity Taxonomy Tropical Forest Vicariance Amazon Basin Guyana Shield |
| spellingShingle |
Biogeography Chloroplast Genetic Analysis Genetic Differentiation Geographical Region Molecular Analysis Mutation Neogene Neotropical Region Phylogeography Pleistocene Pliocene Population Distribution Reconstruction Shrub Species Diversity Taxonomy Tropical Forest Vicariance Amazon Basin Guyana Shield Scotti-Saintagne, Caroline Amazon diversification and cross-Andean dispersal of the widespread Neotropical tree species Jacaranda copaia (Bignoniaceae) |
| topic_facet |
Biogeography Chloroplast Genetic Analysis Genetic Differentiation Geographical Region Molecular Analysis Mutation Neogene Neotropical Region Phylogeography Pleistocene Pliocene Population Distribution Reconstruction Shrub Species Diversity Taxonomy Tropical Forest Vicariance Amazon Basin Guyana Shield |
| description |
Aim: The phylogeographical history of Neotropical species can be difficult to reconstruct because of superimposed Neogene and Quaternary histories, and because of taxonomic uncertainty. We analysed range-wide genetic diversity in a widespread pioneer tree species, Jacaranda copaia (Aubl.) D. Don, to characterize phylogeographical structure, date the evolutionary relationships among lineages, and evaluate the role of dispersal and vicariance in establishing the present geographical range. Location: Guiana Shield; central, southern and western Amazon Basin; Chocó region; Central America. Methods: We analysed nine nuclear simple sequence repeat loci (nuSSR), eight chloroplast SSRs (cpSSR), and two cpDNA intergenic sequences in 341 adult trees. Genetic differentiation at nuSSRs was inferred using Bayesian clustering. Dating of chloroplast lineage divergence was obtained using a range of published mutation rates and Bayesian coalescence analyses. Population divergence dating was performed using an isolation-with-migration model for eight loci (one cp sequence and seven nuSSRs). Results: Nuclear SSR variation identified three geographically overlapping clusters (nu-1, nu-2, nu-3). Twelve cpDNA haplotypes were clustered into two haplogroups (cp-1, cp-2) with the central Amazon harbouring the highest diversity. Molecular dating analysis suggests that cpDNA haplotype diversification started around the end of the Pliocene (2.61 Ma on average), whereas population divergence was more recent and occurred during the mid-Quaternary (point estimates between 357 and 436 ka). Main conclusions: The genetic variation of J. copaia in the Neotropics was shaped mainly by Pleistocene events. Chloroplast diversity did not display the expected cis/trans Andean disjunction, indicating recent dispersal. Nuclear variation revealed that separate regions share a recent history, with a centre of diversity in the central Amazon Basin. The geographical pattern of diversity is congruent with the distribution of the two subspecies, J. copaia copaia and J. copaia spectabilis, and evidence of nuSSR admixture between the two taxa supports their classification as subspecies. © 2012 Blackwell Publishing Ltd. |
| format |
Artigo |
| author |
Scotti-Saintagne, Caroline |
| author2 |
Dick, Christopher W. Caron, Henri Vendramin, Giuseppe Giovanni Troispoux, Valérie Sire, Pierre Casalis, Maxime Buonamici, Anna Valencia, Renato L. Lemes, Maristerra R. Gribel, Rogério Scotti, Ivan |
| author2Str |
Dick, Christopher W. Caron, Henri Vendramin, Giuseppe Giovanni Troispoux, Valérie Sire, Pierre Casalis, Maxime Buonamici, Anna Valencia, Renato L. Lemes, Maristerra R. Gribel, Rogério Scotti, Ivan |
| title |
Amazon diversification and cross-Andean dispersal of the widespread Neotropical tree species Jacaranda copaia (Bignoniaceae) |
| title_short |
Amazon diversification and cross-Andean dispersal of the widespread Neotropical tree species Jacaranda copaia (Bignoniaceae) |
| title_full |
Amazon diversification and cross-Andean dispersal of the widespread Neotropical tree species Jacaranda copaia (Bignoniaceae) |
| title_fullStr |
Amazon diversification and cross-Andean dispersal of the widespread Neotropical tree species Jacaranda copaia (Bignoniaceae) |
| title_full_unstemmed |
Amazon diversification and cross-Andean dispersal of the widespread Neotropical tree species Jacaranda copaia (Bignoniaceae) |
| title_sort |
amazon diversification and cross-andean dispersal of the widespread neotropical tree species jacaranda copaia (bignoniaceae) |
| publisher |
Journal of Biogeography |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/17894 |
| _version_ |
1787143932874850304 |
| score |
11.755432 |